External Control - Dimplex Dhw 301P Montage- Und Gebrauchsanweisungen

Connection
8.5.4.

External control

NOTE
Only one floating connection is permitted. Otherwise,
there is a risk that the electrical components may be
destroyed. Failure to observe these instructions will
void any warranty claims.
NOTE
Exclusive operation of the domestic hot water heat
pump at low load times can lead to impaired function-
ality.
To enable the "Domestic hot water heat pump" func-
tion depending on peak and low load times (full and
special tariff) it is not necessary to connect it to the
floating contact on the electricity meter.
The time window for operation of the domestic hot
water heat pump or the additional heating element
can be entered directly on the device operating panel
(see "Programming" chapter).
8.5.4.1. Contact for peak and low load times
(HP/HC)
The output contact (floating) from the electricity
meter can be connected to the domestic hot water
heat pump without the need to make complicated
settings on the domestic hot water heat pump.
– Contact open = Load shedding
– Contact closed = Normal function
The Load shedding function must be enabled on the
device (see "Load shedding" chapter). By default, the
heating element does not work at peak load times.
Electrical connection:
Remove the hood including the nozzle ring.

Detach the fixing screw for the nozzle ring at the

lower collar.
Remove the cover from the switch box.

Connect the electricity meter cable to terminal 1

as a floating contact.
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8.5.4.2. Controlled ventilation
The domestic hot water heat pump can be used to
continuously ventilate a room even if the heat pump is
not performing heating operation.
To ensure that the fan is not running constantly, a hu-
midity or room air sensor is connected to terminal 2 on
the board as a floating contact. Refer to the previous
chapter for details of the electrical connection proce-
dure.
– Contact open = Fan stopped
– Contact closed = Fan running
The settings for external ventilation control
(example for humidity switch: Stego EFR 012) are
made using the "FAN MODE 3" option in the menu
(see "Fan mode" chapter).
8.5.4.3. Utility company blocking contact
To ensure that the supplementary electric heating is
not operating at peak load times, the utility company
blocking contact from the electricity meter can be
connected to terminal 1 on the board.
– Contact open = Supplementary heating
operation prohibited
– Contact closed = Supplementary heating
operation permitted
When load shedding level 0 or 1 is selected (see "Load
shedding" chapter), either only the supplementary
electric heating (load shedding = 1) is disabled, or the
heat pump and the supplementary electric heating
are blocked (load shedding = 0).
Electrical connection:
Run a 2-core cable (2 x 0.75 mm²) through the

cable gland on the rear of the device, feed it into
the switch box and connect it to terminal 1. Re-
move the factory fitted link cable first.
FD 0303
English
EN-15